Category Archives: Quantum Computing

Lattice-Based Cryptosystems and Quantum Cryptanalysis

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Quantum computers are probably coming, though we don’t know when—and when they arrive, they will, most likely, be able to break our standard public-key cryptography algorithms. In anticipation of this possibility, cryptographers have been working on quantum-resistant public-key algorithms. The National Institute for Standards and Technology (NIST) has been hosting a competition since 2017, and there already are several proposed standards. Most of these are based on lattice problems.

The mathematics of lattice cryptography revolve around combining sets of vectors—that’s the lattice—in a multi-dimensional space. These lattices are filled with multi-dimensional periodicities. The …

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Super-pure silicon chips unlock next-generation computers

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Silicon is so important for electronics and computing that it’s become synonymous with technology – even getting a valley named after it – but the stuff still has its flaws. Now, scientists have created a way to make super-pure silicon chips that could… Continue reading Super-pure silicon chips unlock next-generation computers→

ONCD report: ‘Fundamental transformation’ in cyber, tech drove 2023 risks

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Evolving critical infrastructure risks, ransomware, supply chain exploitation, commercial spyware and AI were the top trends, the office reported.

The post ONCD report: ‘Fundamental transformation’ in cyber, tech drove 2023 risks appeared first on CyberScoop.

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Breakthrough in Quantum Cloud Computing Ensures its Security and Privacy

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Oxford University researchers used an approach dubbed “blind quantum computing” to connect two quantum computing entities in a way that is completely secure. Continue reading Breakthrough in Quantum Cloud Computing Ensures its Security and Privacy→

Surviving the “quantum apocalypse” with fully homomorphic encryption

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In the past few years, an increasing number of tech companies, organizations, and even governments have been working on one of the next big things in the tech world: successfully building quantum computers. These actors see a lot of potential in the te… Continue reading Surviving the “quantum apocalypse” with fully homomorphic encryption→

Apple Announces Post-Quantum Encryption Algorithms for iMessage

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Apple announced PQ3, its post-quantum encryption standard based on the Kyber secure key-encapsulation protocol, one of the post-quantum algorithms selected by NIST in 2022.

There’s a lot of detail in the Apple blog post, and more in Douglas Stabila’s security analysis.

I am of two minds about this. On the one hand, it’s probably premature to switch to any particular post-quantum algorithms. The mathematics of cryptanalysis for these lattice and other systems is still rapidly evolving, and we’re likely to break more of them—and learn a lot in the process—over the coming few years. But if you’re going to make the switch, this is an excellent choice. And Apple’s ability to do this so efficiently speaks well about its algorithmic agility, which is probably more important than its particular cryptographic design. And it is probably about the right time to worry about, and defend against, attackers who are storing encrypted messages in hopes of breaking them later on future quantum computers…

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